var speed = 50
	demo2.innerHTML = demo1.innerHTML

	function Marquee() {
		if (demo2.offsetTop - demo.scrollTop <= 0)
			demo.scrollTop -= demo1.offsetHeight
		else {
			demo.scrollTop++
		}
	}
	var MyMar = setInterval(Marquee, speed)
	demo.onmouseover = function() {
		clearInterval(MyMar)
	}
	demo.onmouseout = function() {
		MyMar = setInterval(Marquee, speed)
	}